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#1
hard shutdown caused problems. need help figuring it out
I have a resonable computer setup. which has been reliable since it was built.
I recently opened the case up and placed 2 additional HDD's into the
computer via Sata 2 connection. The HDD's were a Samsung f1 1TB Sata and a
Western Digital Green Caviar 3TB Sata 3. So i could transfer data from one to
the other.
After the transfer i removed the additional HDD's and left the sata cables in
the computer as i had to remove the Graphics Card to reach the motherboard
Sata Sockets.
I screwed the Case back up and switched the computer on. I heard the Initial
Beep as the computer started up and a faily obvious repetative tap/click. I
Thought that it could be a cable caught in a fan and because i couldnt get to
the cables fast enough i resorted to yanking the power cable out as the pc
was going through the black background and white writing stage just before
the windows 7 startup logo appears.
I then re-opened the PC case to clear the wires from the fans. I didnt notice
any specific obstructions (and neither did i notice the DVD Drive sata cable
was unplugged).
When i started the machine up. it almost instantly displayed a message that
stated 'Overclocking failure!!'. I then entered the BIOS and noticed nothing
specifically modified and because i now absolutely NOTHING about over
clocking i decided that restoring the defaults was the best option.
The only original differences in the bios from default was seting the DRAM to
1333 from 1600 for compatibility. and setting asus cool'n'quiet and smart fan
settings.
That night,
I setup a UTorrent list which was rather big. The torrent client crashed and
i reloaded it and waited for the torrents to reverify. Then i started up a
game called Elderscrolls 5 - Skyrim. It Ran ok but utorrent does sometimes
slow down the game. When i finished playing the game i shut it down and
viewed the torrent progress. i saw a message stating the HDD was overloaded.
I left the torrents moving along and then ran firefox. I opened a few tabs
and then the computer shutdown instantly. I had to switch off the PSU and
then unugged it for 3 or 4 seconds. I placed the power back in and turned
the PSU back on. The PC started up displaying a message to choce safe mode
or not. I loaded up as normal.
I left the machine downloading for the night, it did not shutdown. How-ever.
The following night the same thing happened again and i left the machine
downloading over night with a shutdown. I had assumed that it was utorrent
causing a critical failure.
However, its started happening during excessive web browser usage only and
then it started hapening on a fresh startup and opening the win7 forum book
mark. there have been times when i havent had a crash at all with over 10
tabs open.
MY QUESTIONS:-
1a - Would the BIOS be corrupted by Switching the pc off during start-up?
1b - Would the BIOS Defaults be corrupted aswel?
1c - Could a corupted BIOS cause a critical system shutdown?
1d - Could a corrupted BIOS setting/bios overclocking setting cause that
specific component to fail by shuting down the pc?
2a - Could the extra power draw from 2 additional HDD's cause the PSU to be
permenantly damaged therefor causing critical system shutdown?
2b - Could the system have assigned tasks the the additional HDDs that no
longer exist?
2c - As the PC shutsdown primarily whilst Browsing the net using Firefox and
downloading mass files in uTorrent. What Hardware components are
specifically Taxed running those programs?
2d - Could it just be a coincidence that its happening whilst browsing and
downloading?
3a - The components that were modified/moved during the hdd swapping was the
Sata cables and Graphics Card. Could a damaged Graphics card cause a
system shutdown whilst browsing the net but not whilst playing a pc game
that is limited to 4GB of ram and no more (Skyrim)?