System lock up

[Joker08]

just recently my computer started locking up with a steady buzz sound usually just after boot, othertimes after its been on for a bit and even once mid game, but also sometimes it doesnt lock up but instead i come back and the computer is off. any suggestions?
 specs are as follows

its got a new video card:  saphire X1950 Pro
Product name        alienware                     
Board model         Genuine Intel(R) D875PBZ system board
OS version          Windows* XP version 5.1 Service Pack 2 build 2600
OS memory           1,047,236 KB RAM
 
***************************************************************************
                                 Processor
***************************************************************************
Processor           Intel(R) Pentium(R) 4 CPU 3.20GHz
Bus speed           800 MHz
L1 cache            Data Cache 8KB, Execution Trace Cache 12K Micro-ops
L2 cache            Advanced Transfer Cache 512 KB
Form factor         Socket 478
Stepping            9
 
***************************************************************************
                                  System
***************************************************************************
Physical memory     1,024 MB RAM
Memory speed        DDR400
Memory type         DDR, Synchronous
Form factor         DIMM
BIOS date           11/24/2003
BIOS size           1024 KB
BIOS version        P17 (BZ87510A.86A.0081.P17.0311241511)

[quaxo]

Is this buzz sound coming from the system itself or out of the speakers?

[Joker08]

i believe the speakers, i will double check next time it locks up.  weird thing i just took my medeival II kingdoms cd out of my cd drive during the last lock up ( wasnt playing it but it was in the drive) and it doesnt seem as though i have locked up since. I am sure i will soon though... will let you know about the sound when it locks back up.
 thanks
   Joker

[Joker08]

the high pitch sound is from the speakers.

[Joker08]

any idea if this is a hardware issue or what?

[patio]

Try the speakers on another machine...if they do the same thing it's the speakers.
It can also be some random RF interference...try moving some of the other electronics away from the PC.

[th674]

did it do the samething before you installed the new video card? if it didnt, then you may have a compatability issue between your new card and motherboard. i had major issues with AMD and nvidia for awhile. finally got fed up and changed to ATI and problem was forever resolved. good luck

[patio]

He's having sound issues...ATI and nVidia are vid cards....

[Joker08]

the weird thing is sometimes it locks up without the buzzing sound on the speakers, i uninstalled and reinstalled the sound drivers, and it still seems to randomly happen, i will try the speaker movement, other then that i dont think i have any electronics near my computer that weren't there before but will double check.
  thanks for the help
     Brian