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Hardware specs:

  • ACER 5742G (Core i3 380m, optimus with Nvidia GT540M)
  • Replaced primary HDD with Samsung 256GB 830 SSD
  • Replaced CD drive with primary HDD (WD Scorpion Blue, 640GB)
  • Lspci output available here: pastebin


  • Dual booting Windows 8 Pro and Archlinux x64 on the SSD, with GRUB (non-legacy)


As of today, when I boot the laptop instead of getting the generic BIOS screen, I get bright white and grey lines on the screen. My SSD is password protected, and if I pound on the keys enough the prompt to enter my password on the drive shows up, I can enter my password (but the screen doesn't update as I enter characters like it normally does). When I get to the OS, the screen flickers briefly and then eventually stops and then behaves normally with no issues.

In a similar vein of weird, during this process there is significant backlight bleed: when the white and grey lines go away and the password prompt shows up, there is a ton of backlight bleed in the bottom left hand corner, that then spreads to the rest of the screen slowly.

I have also noticed that the BIOS has been booting much more slowly lately than usually, may or may not be related.

What I have tried:

  • Battery pull
  • Reboot

Additional thoughts

Probably a hardware issue, since it happens right when I start up the computer (no software loaded yet). Appears to post properly, so may be graphics related.

Any ideas on where to go from here? I'm a little confused since once fully booted in the OS it behaves completely fine...

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closed as too localized by Karan, Brad Patton, Tanner Faulkner, Nifle, Ƭᴇcʜιᴇ007 May 25 '13 at 17:48

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

You may want to run a mem test just to eliminate or confirm that as a suspect even though everything seems to be running well now. – Carl B May 24 '13 at 16:20

Reset my BIOS settings, issue appears to have disappeared (hit "F2" on the white and grey screen).

Not sure if issue will crop up again, I have no idea what caused it.

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