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Windows 7: Toshiba Laptop won't start up- blinking cursor on black screen

20 Jan 2013   #1

Windows 7 Ultimate x64
 
 
Toshiba Laptop won't start up- blinking cursor on black screen

Today I tried to boot up my laptop but I am stuck at a blinking cursor on a black screen.

To make matters work my keyboard doesn't work either so I can't use F2 or F12 before it boots to the black screen.

Any idea what the problem could be? I'm stumped and thinking the laptop may just be trash now.


My System SpecsSystem Spec
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20 Jan 2013   #2
Microsoft MVP

 

Most often failure to boot disk is a user failure, not hardware. Keep trying, more vigorously. Sometimes what helps is to reset the CMOS which can also be done by pulling the battery if you can access it easily enough on your lappy.

You need to work through these steps for Troubleshooting Windows 7 Failure to Start.

There are some Boot disks/flash sticks provided in the steps that will boot themselves without user input so I'd boot Hiren’s BootCD 15.1 or Hiren's BootCD From USB Flash Drive to run an A/V test, test your HD and RAM, Check File System and Active partition with Partition Wizard on Hirens.

But if you can't get the Windows 7 installer or Repair CD to boot you may need to rescue your files using Rescue disk in Step 9, then wipe the HD using Partition Wizard on Hirens, which will force the installer to start to Clean Reinstall - Factory OEM Windows 7.

You can also try getting the inferior Toshiba HDD Recovery Utility if you can get the Fkey to boot it.
My System SpecsSystem Spec
20 Jan 2013   #3

Windows 7 Ultimate x64
 
 

I get the Toshiba screen and then BOOM black screen with cursor. At the Toshiba screen it gives me two options. Push F2 or F12 but I can't push either because the keyboard doesn't work at all. No caps lock light or anything.

This is not user error...
My System SpecsSystem Spec
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20 Jan 2013   #4
Microsoft MVP

 

Then boot the Hirens disk which will autostart on its own to see if you can run the tests which it can do that I enumerated above - it can accomplish them all. You'll then know if you're infected and if an A/V scan can clean it up, copy out your data with XP explorer, test the HD with the maker's diagnostics or Seatools.

If not then boot the Partition Wizard CD which will always boot itself. From it you can test the HD surface, File System on each partition, confirm the Active flag is intact on the Windows 7 or its boot partition, then maybe even jump-start it using Partition Wizard Rebuild MBR - Video Help.

If none of that works to start it and you still can't boot the Windows 7 DVD or Repair CD to run Startup Repair then use the Hirens disk or Paragon Rescue Kit Free Edition 11.0 Free CD which boots itself to rescue your data, then Partition Wizard CD again to Quick Wipe the HD which will force the installer to boot itself to Clean Reinstall.
My System SpecsSystem Spec
21 Jan 2013   #5

Windows 7 Ultimate x64
 
 

Tried that too. It won't boot from a cd rom either.

Guessing this looks like it's just junk eh?
My System SpecsSystem Spec
21 Jan 2013   #6
Microsoft MVP

 

I specifically gave you some disks that boot themselves, not normal CD's which require user input to boot. I am now having to repeat this a third time since you can't seem to get it or are too lazy to do the work.

What was the result booting the PW CD which is designed to boot itself? If it fails boot Seagate Seatools or DBAN which also self-boot to wipe the HD. Darik's Boot And Nuke | Hard Drive Disk Wipe and Data Clearing

If you need to rescue data Paragon Rescue Kit Free Edition 11.0 Free which also self boots.

I'd never give up if the mobo is functioning. But you'll need to decide if you want to do the work or be lazy. Crazy is fine, lazy won't get there.

You can research how to find the CMOS battery to pull it out to reset BIOS. I'd also unplug it, remove battery, hold power button to drain power, then plug back in only A/C adapter to try it again.

You can also move the HD to another laptop to wipe it which forces the installer to boot. Once it installs if you've still lost ability to boot disks you can reflash the latest BIOS from Windows, or you can see if there's a way to reflash it from boot now.
My System SpecsSystem Spec
21 Jan 2013   #7

Windows 7 Ultimate x64
 
 

That's the thing. I don't think the main board is functioning fully.

Been trying the disks you gave me and it won't boot those either and just repeats the same stuff I mentioned earlier.

I have a feeling the main board is fried. Talked to another geek friend of mine and he thinks it's done for too.

Guess I'll bring it to him before I part it out.
My System SpecsSystem Spec
21 Jan 2013   #8
Microsoft MVP

 

Pull the RAM sticks out to see if board beeps in response. That means it's alive.

Next put the RAM sticks back in, checking slots to blow out any debris, reseating sticks carefully.

Then pull the HD cable to see if it generates black screen error. Board is working that much.

While HD cable is removed try booting a disk.

If HD is blocking disk to boot it is often solved by wiping the HD installed along with it's HD to another PC with Diskpart Clean Command. This clears the boot sector of code that can block booting.
My System SpecsSystem Spec
21 Jan 2013   #9

Windows 7 Ultimate x64
 
 

So far I have tried to boot with ram removed (no beeps) & removed hard drive to run chkdsk on it in my hard drive dock.

Tried to boot with no hard drive, ram and did same black screen with line.

Btw the line isn't blinking like I thought it was.
My System SpecsSystem Spec
21 Jan 2013   #10
Microsoft MVP

 

So you have no signal whatsoever to the monitor? Do you have fans and any LED's?

If so then google video how to reinstall your laptop model's monitor, as sometimes the cables come unplugged. If no video for your model or line look at a similar model "reinstall Toshiba laptop monitor" video search.

Have you drained all power this way?

My System SpecsSystem Spec
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 Toshiba Laptop won't start up- blinking cursor on black screen




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