Satelltie A100-237 startup fails at boot screen...

It happens at the startup before windows starts to open that the bar at the bottom stops at 80 to 90 percentage position. i don't know why but i suspect that it happens when i plug in the local area connection cable before starting the computer. not all the time the problem occurs. not cyclic but once in 4 or 5 startings.
Thank you.

Hi requiem,
I suggest you to test this lan-cable thing, and this about 10 times. Maybe its really depending on how and when you connect your lan cable.
Do you use DHCP or fixed IPs? Maybe that can be a reason, because if you use DHCP, windows has sometimes problems to assign a IP and locks up because of it.
Try to assign a fixed IP, so if you encounter the same problem, then you probably have an other problem. Sometimes its good to check the memory of the system, with tools like "memtest86" or "prime95" to ensure that your system has no hardware failure.
Greets

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Im having trouble getting my macbook pro to boot up after a fail safe boot, im getting as far as the grey screen with the apple loggo. so im trying to run a disk repair but is saying the disk is locked, how do i unlock disk??

Im having trouble getting my macbook pro to boot up after a fail safe boot, im getting as far as the grey screen with the apple loggo. so im trying to run a disk repair but is saying the disk is locked, how do i unlock disk??

Some clarification may help.
You say you cannot boot normally. It shows a gray screen with the Apple logo.
Did you say it will boot successfully in Safe Mode (boot, then hold down the Shift key)?
How did you boot the machine to run Disk Utility? (Which keyboard combinations)?

How do I rename windows in the startup screen (boot screen)

Hi
I have just replaced my HDD for a larger one and put the old one in the SuperDrive DVD bay (had a smaller one there before also)
I Cloned both the Mac side and the windows side using CCC and winclone an both seems to be cloned fine , however I do not want to erase(format) the old drive for a few weeks until 100% sure everything is working fine .
So my Question . As I have 2 HDD installed when I hit options at startup the boot screen appears with 2 Mac Partitions and 2 windows partitions ,
The Mac ones I just renamed on the mac side, ( 1TB mac and 500GB mac) and on boot screen those names show up .
but
The 2 windows bootcamp drives/partitions just are written WINDOWS , so I have no idea which is old one and which is new larger one , I have tried renaming in the same way , on my mac I have them show up on desktop and called Bootcamp 1 and Bootcamp NEW , but on the boot screen just called WINDOWS .
How can I rename one of these so both are not just named windows and have it show up on the boot/option screen ?
Thanks mark
Running mountain lion 10.8 and windows XP

settings- notifications. Edit. Choose application, then click it and choose how you want to be notice

Both my backup drives show up, but fail to boot, staying in grey screen with spin wheel.

I did some maintenance, copying lots of files, running Cocktail for the first time (failing to note exactly what I did) and after running Disk Warrior on both my bootable external drives (one OWC, one LaCie) they both hang in grey Apple screen with spinny wheel and never boot up, though both did earlier in the day, and have never failed to boot in years of service. Both appear on the desktop, show vertified in Disk Utility and booted up fine one day before all the maintenance. I don't know what Cocktail may have done, but it may have created a (now solved) problem for Photoshop 7, which crashed thereafter while loading, something that's only ever happened twice in six years. I managed to track down a TWAIN plug-in that had always been in Photoshop, something to do with scanning, but was now causing the crash. Anyhow, Photoshop is now working again, (after just removing that plug-in) but neither backup will boot up. Please don't suggest a system archive and install. I'm hoping for some miracle little file that once removed will restore the booting of the two externals. Your help is greatly appreciated. Please assume I am brain damaged and spell things out for the simple-minded. Thanks in advance.
I hope BDAqua sees this.
I only have one iBook, and it's less than half full; couldn't figure how to edit below that I'm now on 10.4.11. See what I mean?

Since you are using your two external drives for booting, do you have clones on them?
If so, why not simply update the clones? I'll bet they'd boot for you if you do that.
I'll put out a call for BDAqua.

Two Macbook pros circa 2009 in our temporary household in Turkey suddenly failed to boot and got stuck on the grey screen. They were able to boot at the Apple store, but not when we brought them back to our apartment. Could this be a coincidence? A

Two Macbook pros circa 2009 in our temporary household in Turkey suddenly failed to boot and got stuck on the grey screen. They were able to boot at the Apple store, but not when we brought them back to our apartment. Could this be a coincidence? A

THank you Ogelthorpe. When my wife's computer I went on line to the site that you sent and tried everything But nothing worked. When my son came to visit and his MacBook Pro did exactly the same thing we became suspicious - too much of a coincidence. We took both computers somewhere else, out of our apartment, and they both booted. We ran disk utility on both, but the report in both cases was that there are no issues with the hard drive. Back in our apartment neither will boot up. My MacBook Pro is a later model with a solid state drive and it seems to work fine here.. I tried an external drive and it works fine. We think that this has something to do with some kind of magnetic interference in our apartment to which the 2009 drives are susceptible. It is indeed a mystery!
alf

X200 fails to boot up with blank screen

Hi guys, i came to the problem this morning. when i was trying to start up the computer, it failed to boot up. the machine was normally shut down last time. with no beep, the screen remains blank and black, without any change. after 2 seconds of pressing the powerkey, it is shut down with a short beep. here are what i tried:
1, use an external drive and a windows 7 disk. no reaction.
2,Remove AC and System battery. Press and hold the power button several times (3-5 time) for a count of 5 secondsReconnect AC and press the power button - if system starts normally, shut down and insert the battery. does not work.
by the way, the mahine was bought in Hongkong and still is in warranty. however, i am currently in Germany, and will stay for another 3 months.
anyone with any suggestions? thanks.
Solved!
Go to Solution.

got it fixed by clearing CMOS, wow
according to: http://forum.lenovo.com/t5/X-Series-ThinkPad-Laptops/Blank-screen-after-Bios-Upgrade-on-X200/ta-p/29...

Macbook won't go past boot screen-want to back up files before reinstalling

Hi everyone,
My Macbook (Aluminum Unibody-before they labeled it "the pro") started slowing down when I installed snow leopard recently. It was jamming up a lot and I would have to restart often. On my most recent lock up, I restarted and it never went past the apple boot screen. I booted from the system DVD and ran disk utility, to no avail. There were all sorts of errors. Brought the computer into best buy and they tested the health of my hard drive-it is in perfect condition. THey suggested I just reinstall the OS and everything on my computer would be saved. I went to do this and received this error "You cannot install Mac OS X on this volume without changing your installation settings. Click Options to change the settings. The contents of this volume cannot be changed"
When I click options, I receive this:
"The destination disk must be erased for installation.
The detination volume will be completely erased and a new compy of Mac OS X will be installed on the volume. All your data will be lost" Then gives me these options "Format as: Mac OS Extended (Journaled) or Mac OS Extended (Case-sensitive, Journaled).
You gotta talk to me like I'm someone with no experience with this sort of thing. Because.. I'm not experienced with these issues. I did all the startups that are suggested... the fsck (or whatever) thing (doesn't fix anything), the single-user start up, start up in safe mode (doesn't work).
Now, I can boot up with my system disk and reach the disk utlity. There is an option there to "restore" by dragging the Mac HD to the top field and the external hard drive to the bottom field. It does say it will write over any other files, however.
Here's my issue-first, I want to make sure that it will really make a full copy of everything, just as Time Machine does. The only hard drive I have that is WORKING with this, is the one that my time machine backups are on. I'm assuming all of my backups (there are many), will be erased and written over. Is this so? And will backing up by this method, really work to where I will be able to access all my files? Will I be able to restore from this backup after the OS is reinstalled? I hadn't backed up since December 3 and there is some important information and files on there that I just can't lose. I already tried switching out the hard drive from my computer to another mac, but for some reason, the screw keeping the hard drive attached, is stripped and there's no way to get it out. Very strange since I've never tried.
Any help would be greatly appreciated. Thanks so much!
Thank you!

Jenn,
If you cannot run Repair Disk from Disk Utility you are ARE NOT running it from the original Install Disk that came with the computer or the Snow Leopard Upgrade Disk you purchased. Please follow the directions I provided and you should be able to run Repair Disk form Disk Utilities.
Regarding Best Buy I would recommend NOT taking it to them for repair, if you have an Apple Store in your area please take it there. If you don't have an Apple Store within a couple of hour drive use this link to locate an AASP to take your machine to.
I am assuming you have your Time Machine backups on an external HD. If so they are safe for now. In the event you need to reformat the internal HD on your MBP and reinstall OS X you can use the TM backups to restore from.
Regarding "do you think copying the disk as mentioned (from the disk utility) would work?" No that would not work.
Lets first see if Disk Utility can repair your internal HD. If for some reason that fails then you can run Apple Hardware Test and see if any HD errors are reported there. And finally if that doesn't come up with anything then you can make an appointment at an Apple Store or AASP.

IBook G4 fails to boot with internal HD installed, works when removed

The short version: My iBook started failing to boot via any method (gray screen) and the boot menu (Option during startup) would freeze. Replaced HD, things were better. Six months into new HD, nearly the same symptoms appear again. Removed HD, now running off different HD via FireWire.
The long version–
Back in late 2008-12, my iBook started failing to boot up. Usually it would refuse to boot from any source. Booting the internal disk (10.4.11) would get to a gray screen without any logo and stay there. Holding down Option, the boot menu would come up, but it would usually freeze before it displayed any volumes. Booting from CD (AHT, or OS install disc) would fail in nearly the same way as booting from the internal drive. Target Disk Mode would start, but once the other machine tried to access the drive, the FireWire logo would stop moving and the drive would never show up on the other computer. Very rarely, the machine would get a bit further through one of the boot mechanisms, but it usually froze while booting or just after login.
This machine has gone through three logic boards in the past, so I suspected that was the problem again. I took it to a local Genius Bar and the Genius explained that it was probably the hard drive. He said that sometimes, depending on the way the drive fails, it can "take out" other parts of the system due to drawing too much current, etc.
I was a bit skeptical, but it was going to be much cheaper to replace the HD myself than it would be to send it in for a MLB replacement. So I ordered a new HD (80G) and a USB-to-ATA/SATA adapter. I hoped that I would be able to use the adapter to savlage a bit more data off the drive (it originally failed right before a backup!).
After extracting the HD (40G), I connected it to the USB adapter and was able to access the drive just fine. I used another machine to run another backup from the recently removed HD (40G) to one of my FireWire backup drives and proceeded to put the iBook back together with the new HD (80G).
Once it was all back together, the new HD worked fine. I was able to restore the recent backup from my FireWire drive to the internal, and it worked fine. The only oddity I noticed was that the new drive was apparently trying to sleep several times a minute. I used smartctl (installed via MacPorts) to adjust the power management setting on the drive, and that seemed to help. I also started running smartd (also via MacPorts) to better monitor the new drive.
Recently, a bit more than six months after the new HD was installed, the new HD started showing errors in the system.log. I never found any errors in the logs after the previous HD failed (even though I could look through the logs just fine with the drive attached through the ATA-USB adapter).
Jul 2 18:04:40 Blinky kernel\[0]: disk0s3: I/O error.
Jul 2 18:33:43 Blinky smartd\[217]: Device: disk0, ATA error count increased from 0 to 30\n
Jul 3 02:03:42 Blinky smartd\[217]: Device: disk0, ATA error count increased from 30 to 31\n
Jul 3 03:03:42 Blinky smartd\[217]: Device: disk0, ATA error count increased from 31 to 32\n
Jul 6 23:33:42 Blinky smartd\[217]: Device: disk0, ATA error count increased from 32 to 33\n
Jul 7 00:33:42 Blinky smartd\[217]: Device: disk0, ATA error count increased from 33 to 34\n
Jul 7 12:42:24 Blinky smartd\[217]: Device: disk0, ATA error count increased from 34 to 36\n
Jul 7 13:17:59 Blinky kernel\[0]: disk0s3: I/O error.
+same error message a bit faster than one every 3 seconds+
Jul 7 13:23:00 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 13:33:44 Blinky smartd\[217]: Device: disk0, ATA error count increased from 36 to 615\n
Jul 7 21:17:05 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:12 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:12 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:12 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:15 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:18 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:21 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:23 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:17:29 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:18:17 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:19:21 Blinky kernel\[0]: disk0s3: I/O error.
Jul 7 21:19:23 Blinky kernel\[0]: disk0s3: I/O error.
I did not notice the errors until the afternoon of the 7th when the problem became evident. The events around 13:00 happened when I was trying to run a backup. The first backup failed in an odd way (when I came back to check on it later that evening, SuperDuper! seemed to have quit running). So I restarted the backup and started looking around in the logs. That is when I noticed the kernel I/O error messages. When I asked smartctl to query the drive, it showed that many errors had been occurring and it displayed the drive's log of the last five or so errors (alas, I did not save this output). Meanwhile the re-run of SuperDuper! was having problems again. It seemed to have hung (no SDAgent or SDCopy processes were running, but the main UI was still there). Since the backup was not getting anywhere, I decided to shutdown for a while and try again later.
When I did try again later, I was back in the situation of six months ago. It would not boot at all (no internal, no FireWire, no CD/DVD, boot menu hangs, Target Disk Mode hangs). So, I opened up the system, removed the HD and put it back together without an internal HD. The machine is now able to boot and run from FireWire. Again, the (6 month old, 80G) HD "works fine" via the USB adapter. If SMART were available through the USB adapter, I could check to see if the drive is continuing to have problems. I used SuperDuper! to copy the HD to a volume on my FireWire drive which is how I an now running the system.
Has anyone had any similar problems? Any idea why my iBook seems to be killing/rejecting hard drives? (I say killing because, while the drive is connected internally, it certainly seems to be dying. I say rejecting because once the drive is out of the system, both the drive and the system seem to "recover".) I have read messages there where others report success having their iBook MLB resoldered ("reball"). Has anyone experienced substantially similar issues that were solved with a resolder repair?
Thanks!

I was able to test my “failing” ATA drives in a G4 Mac mini (I had to take the mini apart because its drive had finally failed). I was able to successfully boot the Mac mini with either of my iBook drives installed. Once booted, +Disk Utility+ said that each one's SMART Status was Verified. I used smartctl to pull the full SMART info while I had them installed in the Mac mini.
Since the drives were still “good”, I think this emphasizes that the problem is with the ATA interface on my iBook's logic board. Maybe it is broken, or maybe it just needs to be resoldered. For now I am happy just booting off an external Firewire drive.
BTW, I ended up installing the 6 month old 80G drive in the mini. It has been working OK for 10 days now. As long as it continues to operate normally in the mini, it will serve as evidence that my iBook's HD ATA controller is borked. I just hope the ATA controller is more capable of accepting its fallibility than was HAL.
There is a minor problem with the 80G in the mini in that I am unable to use hdapm to change the aggressive head unloading that the drive suffers. I was able to adjust it with hdapm while it was in my iBook. I am able to adjust it with hdparm under Linux on the mini. Luckily the change I made while booted in Linux "sticks" after rebooting back into Mac OS X (I hear it will be lost if the drive is completely powered off though).

Compaq Notebook CQ-45 137TX fails to boot

Hello,
I own a Compaq CQ-45 137TX (Intel Core 2 Duo P7350, 3 GB RAM, 320GB HDD, nVidia GeForce 9200M GS, Windows 7(upgraded from Vista)) with a broken LCD Screen. Since repairing the screen made no sense for such an old laptop, I started using it as a desktop by attaching an external monitor and input devices. The computer worked fine for the past few months.
Upon restarting the computer after a hiatus of a week or so, the computer failed to boot and display anything on the external monitor. I think it is failing POST.
The laptop gives out multiple beeps continually (not continuous, multiple beeps that don't end).
I thought that the RAM is faulty and tried to reboot the machine by trying one RAM stick at a time (since the laptop has two). It didn't work for either of the two sticks tried in both slots individually.
I think both the RAM sticks may be faulty, however, I am unable to borrow a RAM stick to test on it.
Before buying a new one, I would like someone to clarify or point out other hardware that may faulty in this laptop. I have had people tell me that my Graphic Card may have given up.
Thank you for your assistance.

Hello @root123 ,
Welcome to the HP Forums!
I understand you're unable to boot up your CQ-45 notebook.
It's unlikely to be RAM if neither card worked in either of the two DIMM slots. It is possible that both cards or slots have failed, but highly unlikely.
The beeping should tell you exactly what the error is. Try looking through this document which should help you identify the error: Computer Does Not Start and the LEDs Blink or the Computer Beeps.
You may also want to try this document as well: Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot.
Let me know if you're able to identify the failure with the beep code and we'll go from there.
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

MacBook Pro failing to boot up despite disk utility repair and PRAM

Problem: MBP frozen on boot up screen with Apple logo and turning gear (which freezes after a while aswell)
Solutions attempted: disk repair via custom recovery- disk utility, PRAM
Device: MacBook Pro 15" (early 2010) running 10.9
Additional info-
Never had any issue with the device and this seems to have happened all of a sudden. Installed an SSD a few months ago, and just realised the ssd did not have a recovery partition. However I connected my older hardrive via USB to access recovery which seemed to work fine.
NOTE: for the past few weeks, every now and then I was unable to power the device off and whenever this occurred, there seemed to be a few bugs (ie unable to empty thrash-error 50 and enable to increase/decrease volume/screen brightness). However, holding the power button and restarting it seemed to have fixed it.
Had the same issue but this time around MBP failed to boot up.
Any possible suggestions?

Ranban wrote:
Are you suggesting reinstalling the os?
No.
Furthermore, is there a way to keep the data intact using this method? Or retrieve it at the least?
Repairing a disk should have no affect on the data, nor would an OSX installation. However if the data has value, there always should be a backup, preferably two.
In your original post you said "attempted: disk repair via custom recovery- disk utility". The term 'custom recovery' to me is alien and thus confusing.
What I am suggesting is a repair of the HDD using the original installation disk, not an OSX installation.
You insert the disk holding down the C key at startup. Proceed with the process until you see on the top of the display a menu bar. Select UTILITIES and from the drop down menu select Disk Utility. Then select Disk Utility>First Aid and then run Verify and repair. Exit from the installation process.
That way I know that the attempted repair was properly executed. You may have in essence done that, but there is an element of doubt in my mind.
Ciao.

Mac OS X Lion displays grey (No background) login screen before Apple boot screen

Macbook Pro 13" (2011) Upon startup, displays a grey screen, then after a few seconds, the logon screen, I would logon, then it would show the Apple White boot screen, then it would ask me to log on again (sometimes)
Anyone else have this problem? any solotion would be greatly appreciated...

Try reinstalling Lion:
Reinstalling Lion Without the Installer
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alterhatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

Satellite A100-237: I do not have the Catalyst Control Center after driver installation

Hello,
I use a Satellite A100-237 laptop. 1.83 GHz Core Duo, Ati Mobility Radeon X1600 512MB Hypermemory, 1.5GB DDR2 RAM.
My laptop now seems to use only the own 256 MB RAM (Graphic card's own RAM).
I purchased Need for Speed Carbon and installed it to my laptop.
When I tried to open the game, a blue screen appeared for less than 1 seconds, and than system restarted. Windows said that that was a critical error and a driver stopped Windows XP to operate, therefore system is restarted.
I searched in the net for this problem and, people said that, when they updated the driver the problem is solved.
I downloaded Display driver 8.241 (download file name: display_xp-8241.zip) from toshiba-europe.com.
Driver installed but while installing ATI Catalyst Control Center, at a point the installation process stoped continuing. I had to end the task after a while.
It said that driver is installed and system must be restarted.
Now the game works, thats not the problem, however I do not have the Catalyst Control Center. (Where I recently use it for connecting other screens to my laptop)
How can I solve this problem?
Sorry for long letter,
Thanks for helps.

You may run the driver installer again, use the custom installation option and select Catalyst Control Center only. Alternatively, you may remove the entire driver and try re-installing again. I suggest you also download the notebook driver package from ATI's website instead of Toshiba, as their drivers are usually more up-to-date (although it might be less safe to use them, I don't know).
And BTW, I have the same notebook and I have failed to see an option to set the machine to use the VRAM *only* instead of borrowing from RAM whenever necessary. Any ideas?

After 10.8.5 update on Mac Book Air; startup fails during spinning wheel

The 10.8.5 update was applied and now startup fails during the spinning pinwheel. Initially the screen shows a Gray apple logo and an empty progress bar for a brief (1 sec). Then the spinning pinwheel appears for a few seconds and everything shuts down. I have tried resetting the PRAM, booting from an external drive which allows me to run disk utilites but no help.
Any ideas.

Shut down your Mac.
Wait about then seconds then restart your Mac while holding down the Command + R keys.
From there you should be able to access the built in utilities to repair the disk and restore OS X using OS X Recovery

Satellite a215-s5818 Laptop stucks on boot screen!

Hey Guys, this is my first time here so....
Today i´ve listened some musics on my laptop, and then i´ve turned it off, and now at the night i´ve turned it on, but it stucks on that boot screen that shows the toshiba´s logo!!
What can i do???
I´m really worried, i don´t have money to buy a new one...

Try this:
Turn off the laptop.
Unplug the charger.
Remove the battery.
Hold down power button to drain flea power.
Replace battery, then plug in charger.
Turn on the computer then hold down F2.
Load BIOS defaults by pressing F9 then selecting Yes.
Then F10 to save the changes.
If that still does not work,
Shut down your computer,
Turn laptop on and hold down F8 until you get to the Advanced Boot Option screen.
Select Repair your computer.
Click next on recovery options then login using your account.
Select Startup repair. If startup repair fails, Try System restore next time.
If that still fails, System recovery is your next step.

Mac OS Yosemite 10.10.1 fails to boot

I am running OS 10.10.1 on Mac Pro Early 2009. This morning all running programs including Finder froze. All i could do was Quit or force-quit the running programs and shut down. Then the computer failed to boot. I was able to boot in Safe Mode. But any attempt for normal boot failed.
Since i have Boot Camp, I tried booting to the Disk Startup Manager (pressed Option key). I got the 3 options -- (1) Mac OS; (2) Windows; and (3) Recovery. But after I selected either Windows or Mac OS and the arrow moved to my selected option, nothing happened when i clicked the "arrow" button. I could click it many times but the screen remained frozen till I powered off the computer.
Strangely, when I held down the Command key by itself the computer started normally. But subsequent all attempts to boot normally failed again.
Any suggestions?
i will greatly appreciate any help. Thank you all in advance.

Boot into the recovery partition and select Disk Utility from the 4 option menu.
Run Disk Utility>First Aid, Verify and Repair.
If the disk cannot be repaired an new HDD will have to installed.
Ciao.

Satelltie A100-237 startup fails at boot screen...

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