MacBook screen issue? Virus?

On Saturday, I turned on my Macbook, checked my email, and closed it as I went away for about 15min. I came back, opened the laptop, and the screen would not light up. I plugged in the charger, it was orange. So, I waited. After a few minutes the screen lit back up. I just figured that my battery was dead.
Well, it happened again about 30 minutes ago. But, my battery was fully charged. I turned it off by holding the power button, then turned it back on. The light grey screen that usually appears flashed for about 1/2 second then the screen went black. After a few minutes I noticed that the volume controls seemed to work fine, as I could hear the sound it makes. After about another 5 minutes I realized I could just barely see my desktop. I tried using the brightness buttons. No good. Out of the blue, the screen just lit back up again.
I'm kind of concerned... Nothing like this has happened before. I have an external hard drive, which I haven't used in about 2 months. I'm afraid to back it up as virus' can travel with files.
Do I have a virus?
If not, what's the problem?
How can I fix this?
Is it safe to back up my comp?
Thanks in advance.

I'm confident it's not a virus. It sounds like a graphics card or screen issue. Here are a few things to try.
1. Boot from the install DVD and let it run. You might even put the lid down (keep it open about an inch though) and put a towel over it to get it good and warm. See if you can get it to cut out.
2. Note the exact time the event occurs, and then check your system logs in your Console application for clues to the cause.
3. Run your hardware tester.
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 

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Black MacBook Screen Issue

I have a black macbook that I purchased in the spring of 08 that hasn't had any problems until a few months ago. Whenever I would open my computer the screen would turn black but as I went to shut it the screen would come back on. For awhile I was able to jiggle the screen back and forth until I got the screen to stay lit while the computer was open but it's gotten so bad lately that moving the screen back and forth isn't working and the computer only thinks it's open with a lit screen when it's very close to being shut. Does anyone know what the problem might be and whether or not it can be fixed? If it can be fixed, is it worth the money to fix it or am I better off buying a new macbook pro?

The same thing has happened to me now three times too. It seems to be very unpredictable. Zapping PRAM always fixes it. Man why did I buy a first gen MacBook? I usually always wait till the first revision. Oh Well.
Do you also have the click preceding each new sound? To check for this plug in headphones or powered speakers and turn the volume all the way up on the speakers. Then turn the Mac's volume all the way down. Now hit the mute and unmute button and see if you hear a tick or a click in the headphones each time the unmute is turned on. The audio system has a flaw. I have verified it so far on every MacBook I have tried it on.
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I have a macbook pro what virus protection should i install?

I have a macbook pro, what virus protection should I install?

1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't actually been tested by Apple (unless it comes from the Mac App Store), but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. For most practical purposes, applications recognized by Gatekeeper as signed can be considered safe.
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could find some other way to evade Apple's controls.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. Beyond XProtect, Gatekeeper, and MRT, there’s no evidence of any benefit from other automated protection against malware. The first and best line of defense is always your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source. How do you know whether a source is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself from malware.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. If you need to be able to detect Windows malware in your files, use the free software ClamXav — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
ClamXav may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use ClamXav unless a network administrator requires you to run an anti-virus application.
9. The greatest harm done by security software, in my opinion, is in its effect on human behavior. It does little or nothing to protect people from emerging threats, but if they get a false sense of security from it, they may feel free to do things that expose them to higher risk. Nothing can lessen the need for safe computing practices.
10. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.

My MacBook screen is displaying a pic of a folder with a question mark on it. Tried rebooting but still comes up the same. Anyone know what to do?

My MacBook screen is displaying a blank screen with a folder with a question mark on it. Can't get it to respond. Tried rebooting and folder with question mark comes back up. Does anyone know what to do? Thanks.

Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by:
Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
Boot drive's directory has been corrupted - Repair with Disk Utility.
Critical system files are damaged or deleted - Reinstall OS X.
The disk drive is physically non-functional - Replace the hard drive.
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD:
Boot From The Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, 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.
Reinstall Snow Leopard Without Erasing The drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
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. Alternatively, 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/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
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Macbook Startup Issue - Help!!!!!!!!!!!!

My 2006 mac book had a start up issue a couple of years back, I'd boot her up to be greeted with a screen displaying a start up failed message in three different languages on a grey screen. http://www.minneapolispcrepair.com/images/mac%20error%20screen.jpg
Looking into the issue I noticed this model of Macbooks had issues with their hard drives and they could be replaced under warranty. Brilliant, booked myself into see a Genius and ha presto a few weeks later my hard drive had been replaced. However a couple of weeks after the replacement the issue started happening again but after a few attempts the Macbook would fire up so it wasn't really an issue just a pain in the butt!! Now 18 months down the line its becoming a real issue again, it must take 7 or 8 attempts to fire the blasted thing up, 25 is my highest so how.
My question is, what could be causing this start up issue, could it be the hard drive again???? as replacing the hard drive previously didn't really solve the issue in the first place?? Would apple replace this hard drive again????
The MB is a late 2006 model with Dual Core run Snow Leopard
Hope someone can help :o(
Thanks
Deano

This looks like a kernel panic. Try to startup the mac in safe mode (http://support.apple.com/kb/ht1455) and observe for a few startups whether the problem occurs again or not.
If this solves the problem then you may have a problem with your software installation. Consider reinstalling os x or take a look at your system log file and search for kernel panics (http://support.apple.com/kb/TS3742).
If the problem persists you may have an issue with your hardware. I would recommend to take it to an Apple Genius to have the system checked (free of charge afaik).

Macbook screen goes black for a few seconds then reappears fine

The last two days my macbook screen has gone black for a few seconds then reappeared a few seconds later. Its as if it goes to sleep for a few seconds. The two times it has done this it has been charging. I have checked for hotspots but i have not activated any. I only bought the macbook air two months ago and have been really careful with it so i am confused.
any help? Please?
Thanks people.

Hello @bobbiy58,
I understand that your HP ENVY Recline 27-k150xt TouchSmart All-in-One CTO Desktop PC is going black for few seconds and coming back. I need to ask has this just started? Like since you connected your X-box? If so have you tried disconnecting the X-box to see if it stops?
Please re-post and let me know. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Pale strip running down macbook screen

I noticed earlier today a pale strip running from top to bottom on my macbook screen - as if a sheet of tracing paper had been placed over the screen. Assuming it to be a software issue (recently moved to 10.5.8), I rebooted, only the find the strip appear immediately at start-up, and much stronger than before. Here's an photo:
http://markhobbs.files.wordpress.com/2009/08/screen_strip.jpg
I'm a little concerned this might be a hardware problem, caused possibly by the screen hinge (the left-hand side of the strip coincides exactly with the beginning of the left-hand edge of the hinge). Any help appreciated.
Thanks
Mark Hobbs

I agree that it's a hardware issue. You could try running the Apple Hardware test (inserting install disc 1 and holding down the D key), but if it shows up at startup as well, I'm fairly certain you're looking at damaged hardware that needs to be repaired.
~Lyssa

My white macbook screen only works shortly when booting and when adjusting the brightness (turning it all the way down and up from there) and only stays on for seconds. any idea what to do?

Hi. I'm having quite an issue here. My macbook screen is only lid when i boot and when i adjust the brightness of the screen (going all the way down and up from there). either way it goes black again after a few seconds. External monitor works though.
Any ideas on how to solve this?
Lasse

I buy the dirty theory as well. plug and unplug a whole bunch of times - you may be able to dislodge whatever is causing the issue. Also - make sure the plug is fully seated - (some of the pad jacks are vert tight, and you really have to work them in). I gather you are out of warrenty? Blow in the hole.
last resotr - take a toothpick, dip the end in fingernail polish, get rid of the xs, then very very gently, insert the pick and try to rub the contacts. very gently as you do not want to bend them.

Screen flipping virus?

A screen flipping virus has shown up on my MacBook,
Flips some open tabs, but not all.
How do I remove it?

That does not sound like a symptom of any known malware. This is not caused by a virus.
What do you mean by "flipping" some tabs? It sounds like this is happening in your web browser... if that's correct, try removing or disabling all browser extensions (Safari -> Preferences -> Extensions, if you're using Safari) and see if the problem goes away.

MacBook screen turns white, OS keeps going

The MacBook screen will sometimes suddenly turn completely white during normal use, though the OS keeps running normally. (i.e. sound keeps playing, internet connections remain open, and keyboard input still works.) The screen will only return to normal if the computer is closed and allowed to go into low-power mode before being opened again.
The backlights are unaffected by this issue, as they continue to obey the active, idle, off modes. Also, the screen often blanks white when the angle of the monitor is being adjusted or if the notebook is jarred, though it can happen spontaneously at other times, as well.
Any help you can give us would be greatly appreciated... this problem makes the MacBook nearly unusable when it is occurring, and we have yet to find a solution, as most Google searches for a white screen on a MacBook describe a complete OS crash, which is not the case here.
Thank you all,
--marfmom

Hello all,
I don't know how much this will help everyone but, I had been experiencing a sudden and consistent rash of "white-MacBook-screen" which happened for no apparent reason. Sometime it happened when I tilted the screen and other times, it happened when I wasn't even touching the computer at all!
For awhile, I realized a workaround by setting one of the "Hot Corners" to "Put Display to Sleep" when when I cycled-through a sleep and wake of the display, it came back completely. Not ideal but at least better than closing and opening the lid.
Anyhow, in an unrelated event, I just replaced the hard drive yesterday as the original, 60GB unit had failed and, lo and behold, once I did that, the "white screens" have stopped! So far, I am on day 2 with no occurrences. Perhaps my HD was not seated properly and since I put this new one in, that fixed it?
In any case, if nothing else, I hope my work-around helps someone and, if not, pop open the battery compartment and give the HD a check to make sure it is seated properly. Good luck!

My MacBook screen is stuck in "presentation" mode after using my "Mini DisplayPort to VGA Adapter." How can I fix this?

My MacBook screen is stuck in "presentation" mode (I don't know the correct term) after using my Apple Mini DisplayPort to VGA Adapter - meaning the screen fonts and windows are larger than usual. How can I fix this? I've changed the display settings to modify it a little, but it still doesn't look right. I reinserted the adapter numerous times and restarted my computer, it still hasn't worked. Help!

Reset PRAM. http://support.apple.com/kb/PH4405
Reset SMC. http://support.apple.com/kb/HT3964
Choose the appropriate method.
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

Help--why has MacBook screen gone dark and how do I get it back?

I have a MacBook (model 4,1 running OS 6.8). I use the MacBook as my desktop computer in conjunction with a separate desktop monitor. Today, when I unplugged a USB hub from one of the ports (after carefully ejecting anything on the desktop that needed to be ejected before unplugging), the screen on the MacBook--not the separate monitor--suddenly went dark. I thought it had gone to sleep or into screensaver mode, but noticed that the white light on the MacBook also wasn't showing.
The separate monitor display (on which I'm typing this message) seems fine. I checked DIsplays/Arrangement in System Preferences, but both displays were detected in their usual arrangement, though I did notice that the working display has a white bar across the top but the MacBook display doesn't have one. I clicked "Detect Displays," but that didn't change anything.
I then did a restart, and things seemed to go as usual: the shutdown went okay and on restart, the white light went on on the MacBook and the monitor screen lit up normally. However, the MacBook's screen is still dark and the white light is off.
Can anyone tell me why this happened and how to get my MacBook screen back? I don't know whether unplugging the hub caused the problem or whether it was just a coincidence that something that runs the MacBook display happened to fail right then. Would appreciate any help out there very much--thanks!
PS: Just tried shutting down and powering on again with the separate monitor unplugged, but the MacBook screen still stays black and the white light shuts off as soon as the desktop loads. When I plugged the separate monitor back in, it worked fine. So the problem doesn't seem to be a conflict with the separate monitor (which I've used for years).
Message was edited by: Turtlewiz

Update: I went away for an hour, and when I came back I saw that the white light had gone on as usual when the MacBook went to sleep. When I touched the keyboard, both displays went on; however, the MacBook display went dark immediately and the white light is still out.

MacBook screen issue? Virus?

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