No signal in the screen

Hi, i need help yesterday my lap was working good, but after lunch i try turn on, and i cant see nothing on my screen is dark just the ligth of the button of power my model is a toshiba U405-S2824, please help me!
i opened my computer and everything looks in order, disconnect and reconnect the cable displa... whats wrong
is very stranger for me.

Did you just purchase it?
Have you tried a restore?
http://support.apple.com/kb/HT4367

Similar Messages

I have a power mac G5, when starting up doesnt send no signal to the screen at all

My name is Emilio1991 and I have problems starting it up, I hit the power button and it start great but it have a problem it doesnt send not signal to the screen at all, I thought it was the video card and buyed a new one and it still with thet same problem I try to find solutios and nothing about that can some one help me with that/???

Couple of more ideas...
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/

Ios7 clock app I can no longer see the time or cell signal at the top of the screen.

I just updated to ios7 I have the iphone 5.
I can no longer see the cell signal or time at the top of the clock app. I actually have to leave the clock app to see what time it is or try to read the analog clocks in the time zone section. I have a friend with a 4s, and they can still see the stuff at the top of the screen. Help? Is this a bug, or is there a setting I can change?

This is what it loks like...no time or cell signal at the top

I have dropped my ipad and have cracked the screen. Now the ipad will no longer detect or connect to wifi signals. Any solutions would be greatly appreciated

I have dropped my ipad and shattered the screen badly. A new problem that has only come since the cracking of the screen is that the ipad will now no longer detect or connect to ipad signals. I have tried all the solutions i have found online but none worked.

It will cost approximately US$219 to US$299 depending on the model.
Apple will replace the entire iPad; they don't repair.
If you had purchased AppleCare+ when you bought the device, you would be entitled to up to two replacements over a 2 year period for $49 each.

After updating to iOS 8.3, seem like the wifi signal got worst. The screen rotation is still as bad

sseem like the updates which were pushed didn't do any much hel, the wifi signal was even weaker than before, at times I will be totally disconnected from my home wifi.
And the screen rotation... i don't see any difference to it.

Mine won't even rotate now. So I have not scientific calculator. Apple support recommends backup and restore.
If the screen doesn't rotate on your iPhone, iPad, or iPod touch - Apple Support
iOS software used to be so bullet proof, but iOS 8 is a dog. It's like working with windows. I wish I could downgrade. My wife's phone is at iOS 6 and I'm leaving it there. it works better than mine.

My Mac Mini was not sending a signal to the monitor. I powered down using the power button and now it will not start. When i power up I get a strange 2 tone sound, like a warning alarm. The fan starts, and the light comes on, but no screen

My Mac Mini was not sending a signal to the monitor. I powered down using the power button and now it will not start. When i power up I get a strange 2 tone sound, like a warning alarm. The fan starts, and the light comes on, but no screen.
I have tried with a wired USB keyboard and mouse using a single screen. Powered up with option pressed. No change.
Reset SMC no change

Run the Apple hardware test to see what it tells you. Run the extended test when prompted, which can take awhile.

Have altered the display settings on my mac mini (version 10,6,4) it is now generating a screen that doesn't produce a signal on the HDMI tv I use as a monitor. have no visible screen so cannot reset back.

Have altered the screen resolution,(don't ask why). and am now getting a no signal message on the LG HDMI tv I use a monitor. Have tried going through an old CRT monitor, but no luck. it all worked perfectly before I meddled. Cannot see a screen to reset to a resolution that works. Am new to Macs, and not exactly overburdened with tech know how. Help please.

thanks for your reply Stefan. have reset the pram, but no luck. still getting unsupported signal message. also tried connecting to the tv via an HDMI cable, then get the tv to detect the display. managed to get a picture of a screen saver ( purple galaxy) but this was competely static, could not get any further response, would really appreciate anything further you could add.
Peter. (avus)

My Ipod nano touch is not charging, not showing in my PC or laptop. Last I saw an apple icon and low battery signal. There after the screen is black and no power not taking AC or PC charge. What Can I do?

My Ipod nano touch is not charging, not showing in my PC or laptop. Last I saw an apple icon and low battery signal. There after the screen is black and no power not taking AC or PC charge. What Can I do?

If the Reset didn't work, you'll need to do a Restore.
From iTunes, select the iPad and then select the Summary tab. Follow directions for Restore. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finished, you will be asked if you wish the contents of iTunes to be copied to the iPad.

My large monitor is not showing the screen of my MAC airbook on it. All cables are hooked up. I reset the pram and still not working. Message on black monitor says"check signal cable...?

My large monitor is not showing the screen of my MAC airbook on it. All cables are hooked up. I reset the pram per the instructions I received at the MAC store and the monitor is still not working. Message on blacked out monitor says"check signal cable". All cables are attached and monitor and MAC are both plugged into power source...Help ?

Go to System Preferences, Display. Click on dectect displays.

My Mac pro tower has an "ATI Radion hd 2600 XT" video card, and it stopped getting signal to my tv, are there common problems known? How can I troubleshoot this problem when the signal isn't reaching the screen?

My Mac pro tower has an "ATI Radion hd 2600 XT" video card, and it stopped getting signal to my tv, are there common problems known? How can I troubleshoot this problem when the signal isn't reaching the screen?

http://discussions.info.apple.com/thread.jspa?messageID=12248238&#12248238
http://discussions.apple.com/thread.jspa?threadID=2649035&tstart=0

The signal drops every time i lock the screen.

I have a wierd problem with my Iphone5. The signal drops every time i lock the screen. It seems to happening only when the battery is under 20%.. After i restart my iphone the problem disapear, but after a time it happends again. I have ios 6.0.2. Anybody help?

When the phone goes into sleep mode (screen locked), after a few seconds of inactivity, the wifi will disconnect. This is by design to help further battery life. Once you wake the phone up, it connects. Nothing wrong with the phone, working like it is supposed to. The only way to wifi connected all of the time is to have the device connected to power.

My USB port (closest to the screen) is not working? And what is an IR Receiver in my USB port?

Hi everyone,
     I recently found out that my USB port, closest to my screen, is not working. Before I called Apple Care for help, I performed a PRAM and a SMC RESET, which unfortunately did not work. I called Apple Care and they help me troubleshoot simple resets such as, shutdowns and restarts. The representative I spoke with conluded that the physical hardware has an issue and must be brought to the Apple Store for a diagnosis. I called the Apple Store to at least budget the fee for getting a USB port fixed and it's about $300.00. I never dropped my macbook or had any sort tactile encounterment with hard surfaces by dropping or hitting. I don't understand how my macbook pro would be physically damaged. I then thought maybe my software was out of date (right now I am running 10.9 Mavericks) or I forgot to do the minor software updates, but I was at a lost again because my macbook is up-to-date. I searched for further help and found a way to monitor what's plugged into my usb ports. (I read in the apple forums that a girl had nothing in her usb ports, but upon looking at the System Information> Hardware> USB, that the macbook recognizes that there are drives in the ports) I looked at my ports; one is being used by wirless mouse (the port that works) and the other (the port that doesnt work) is being used by an "IR RECEIVER". Now, is the IR Receiver actually using that port and that's why my macbook cannot recognize other devices inserted into that port? Or is the IR RECEIVER suppose to be in that port and that the hardware for that port is simply damaged (which would mean I need $300.00 to get that fixed)? I know this is a lot, but someone help me?
(PORT THAT WORKS)
USB Hi-Speed Bus:
Host Controller Location:          Built-in USB
Host Controller Driver:          AppleUSBEHCI
PCI Device ID:          0x1c2d
PCI Revision ID:          0x0005
PCI Vendor ID:          0x8086
Bus Number:          0xfa
FaceTime HD Camera (Built-in):
Product ID:          0x8509
Vendor ID:          0x05ac (Apple Inc.)
Version:           5.16
Serial Number:          DJHBAJ06VRDH7FL0
Speed:          Up to 480 Mb/sec
Manufacturer:          Apple Inc.
Location ID:          0xfa200000 / 3
Current Available (mA):          500
Current Required (mA):          500
Hub:
Product ID:          0x2513
Vendor ID:          0x0424 (SMSC)
Version:           b.b3
Speed:          Up to 480 Mb/sec
Location ID:          0xfa100000 / 2
Current Available (mA):          500
Current Required (mA):          2
Microsoft® Nano Transceiver v2.0:
Product ID:          0x0745
Vendor ID:          0x045e (Microsoft Corporation)
Version:           6.34
Speed:          Up to 12 Mb/sec
Manufacturer:          Microsoft
Location ID:          0xfa130000 / 6
Current Available (mA):          500
Current Required (mA):          100
Apple Internal Keyboard / Trackpad:
Product ID:          0x0252
Vendor ID:          0x05ac (Apple Inc.)
Version:           1.18
Speed:          Up to 12 Mb/sec
Manufacturer:          Apple Inc.
Location ID:          0xfa120000 / 5
Current Available (mA):          500
Current Required (mA):          40
BRCM2070 Hub:
Product ID:          0x4500
Vendor ID:          0x0a5c (Broadcom Corp.)
Version:           1.00
Speed:          Up to 12 Mb/sec
Manufacturer:          Apple Inc.
Location ID:          0xfa110000 / 4
Current Available (mA):          500
Current Required (mA):          94
Bluetooth USB Host Controller:
Product ID:          0x821a
Vendor ID:          0x05ac (Apple Inc.)
Version:           0.42
Speed:          Up to 12 Mb/sec
Manufacturer:          Apple Inc.
Location ID:          0xfa113000 / 8
Current Available (mA):          500
Current Required (mA):          0
(PORT THAT DOESN'T WORK)
USB Hi-Speed Bus:
Host Controller Location:          Built-in USB
Host Controller Driver:          AppleUSBEHCI
PCI Device ID:          0x1c26
PCI Revision ID:          0x0005
PCI Vendor ID:          0x8086
Bus Number:          0xfd
Hub:
Product ID:          0x2513
Vendor ID:          0x0424 (SMSC)
Version:           b.b3
Speed:          Up to 480 Mb/sec
Location ID:          0xfd100000 / 2
Current Available (mA):          500
Current Required (mA):          2
IR Receiver:
Product ID:          0x8242
Vendor ID:          0x05ac (Apple Inc.)
Version:           0.16
Speed:          Up to 1.5 Mb/sec
Manufacturer:          Apple Computer, Inc.
Location ID:          0xfd110000 / 3
Current Available (mA):          500
Current Required (mA):          100

I can help with the "IR Receiver" part of your question. That's the piece of hardware inside older MacBook Pros (MBPs) that lets them work with the Apple Remote. "IR" is the standard abbreviation for "infrared," the portion of the electromagnetic spectrum used by remotes for many common devices (stereos, cable boxes, Apple TVs, etc.). The remote sends a coded stream of IR pulses; a corresponding receiver in the target device "sees" the infrared light and decodes it. The MBP's internal IR Receiver sends the received signals to the processor via USB through an internal hub.
The most recent MacBook Pros have dropped the IR receiver and no longer work with the Apple Remote.

Hi I have used my macbook pro with miniport to HDM, and it was working fine. Hadnt used it for a month and now when I connect the TV, the screen on the mac goes blue then back to the page but nothing comes up on the TV. Any ideas?

Hi I have a year old Macbook pro. I was using a miniport to connect it to the TV via HDM cable. It was working fine but I have used it for a couple of months kept it in a drawer and now it doesnt work. When connected to the TV the screen on the mac goes blue as though there is some signal then back to original screen but the TV doesnt show what's on the laptop. Please any suggestions, thanks??

Hello nothingissecret
Check out the article below for troubleshooting steps to resolve the issue. One would be to try a different cable or adapter to test with the television.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Thanks for using Apple Support Communities.
Regards,
-Norm G.

My Mac Book Pro was really slow at everything and would kick me out of my photos every time i got on them. now it won't even allow me to log on. i put my password in and the screen will flash white and go back to the login page. HELP please...

My Mac Book Pro was really slow at everything and would kick me out of my photos every time i got on them. now it won't even allow me to log on. i put my password in and the screen will flash white and go back to the login page. HELP please...

There is nothing wrong with your Dell, it will work fine with any MacbookPro. I have been using Dell displays for over 12 years with many different Mac models. I have two 21" Ultra Sharp displays working side by side to design a Keynote presentation right now.
The issue your having is with the way Keynote takes control of the video output to both displays, it sends the presentation signal to one and the presenter display to the other, this is set up in;
Keynote preferences > Presenter display.
If you want to show a wesite or another app on either display, use application switcher:
press the the command key on the keyboard, then the tab key; a row of applications will show what applications are running, choose which one you want to show. Use command > tab to return to Keynote.

Can anyone help me connect my Macbook Air to a SAMSUNG TV. When I follow the basic instructions (Thunderbolt to HDMI connection) the screen on my computer goes grey and an error message appears inviting me to press any button to restart th

Can anyone help me connect my Macbook Air to a SAMSUNG TV. When I follow the basic instructions (Thunderbolt to HDMI connection) the screen on my computer goes grey and an error message appears inviting me to press any button to restart the Macbook. When I do this nothing happens. Only when I disconnect the computer from the TV does the Macbook allow me to login. The TV does not receive any signal from the Macbook even though I know the HDI port works fine. Any ideas what I'm doing wrong? Do I need to enable something on the Macbook?

An update...
I downloaded Apple's (rather large!) list of software updates today, and I was finally able to recognize my iPod again. I did a restore using the iPod updater from 06-2006, and all seemed to work OK. (I'm afraid to try the new one again!)
Then I tried to re-load my music library from iTunes, and got stuck. It froze up after a while and wouldn't go any further.
When I disconnected my iPod from my computer, I find 2 podcasts and nothing else, though iTunes told me it had transferred 600+ songs. Those 2 podcasts do play fine, and the basic iPod software all seems to be intact.
So -- anyone get through this connection problem and have any ideas to share??
iMac Mac OS X (10.4.7)

No signal in the screen

Similar Messages

Maybe you are looking for