no longer loads after BIOS splash. Cant get into BIOS settings either.
Initially, would turn itself off every day a couple of times (nothing in the logs) - specifically, all lights
would be on but screen is black. I dont think the CMOS is inovolved as the machine would not 'lose' time.
After a while, the issue increased to everytime, within 1/2 hour of bootup Now Bios flash freezes. Can no longer get into the BIOS.
Although it uses Vista home premium as the installed OS, now cant even boot into *nix live cds - CD spins for a minute but then stops as everything freezes.
attempted (all with no luck in solving or hinting at the source of the problem):
While it could boot at all, made sure the computer doesn’t reboot on a blue screen (even though I havent seen any) Also checked for tempurature spikes with speedfan, but the
unit has limited thermal probes, so all I got was HDD temp (which was ok)
made sure its not a backlight/display issue. held flashlight to blackened screen but no evidence that the
backlight simply died. Also, installed vnc server while I had the chance, running as a service. When screen went black, tried to VNC into it with no luck. Cant ping it either.
tried booting with battery removed and no mains power, then the opposite.
opened up case, cleaned any dust out, reseated cooling unit with fresh thermal compound. installed replacement fan as well. can hear it running.
While I was in there I didnt see any visual evidence of a problem on the mobo or any of the components, however it (like laptops in general, I assume) doesnt use capacitors that can be visually inspected anyways.
swapped out RAM sticks. tried with one at a time, then with none.
started up with hardrive removed and a Ubunutu LiveCD as a bootup option.
Let the thing sit without battery and mains power to attempt to release any stored static electricity.
Toshiba A135-S4427 (no longer under warranty)
3 Gig Ram
Vista Home Premium
Thankfully I can access the data and have backups to work with. But unfortunately this is starting to sound like the mobo is toast - which in turn means I have a portable doorstop. Its odd that it was a gradual degradation, as though maybe a buildup of static in it? Anyone know how to discharge static on this thing or have any alternative ideas at all? Maybe I missed something obvious...
Thanks for the help.
Edited by jhsmurray, 14 June 2010 - 10:15 AM.