Blåt skærm-billede med DOS-advarsel ?

Min pc starter ikke hver gang, og siger nogen gange beep-pause-beep.
Pc´en kan starte en gang imellem.
Den har senest vist en blå skærm med advarsel i DOS-tekst.
Hvad er der galt ?
Tak finb

"A problem has been detected and Windows has been shut down to prevent damage to your computer.

If this is the first time you´ve seen this Stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to be sure you have adequate disk space. If a driver is
identified in the Stop message, disable the driver or check
with the manufacturer for driver updates. Try changing video
adapters.

Check with your hardware vendor for any BIOS updates. Disable
BIOS memory options such as caching or shadowing. If you need
to use Safe Mode to remove or disable components, restart your
computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical information:

*** STOP: 0x0000008E (0xC0000005, 0x822BDBC8, 0x889138B4, 0x00000000)

Collecting data for crash dump ...
Initializing disk for crash cump ...
Beginning dump of physical memory.
Dumping physical memory to disk:  80"