I'm not sure if this is a hardware or OS problem, seems more likely to be hardware.

Anyways, my laptop will just blink off every so often. It does not shut down, the screen simply goes blank. Any AUDIO playing begins acting like a skipping record for a few seconds, then goes SILENT. All indicator light (power, battery, plug, etc) continue to act normally.

This laptop is about a year and a half old. There seems to be no corrrelation as to when it cuts out. Playing a game, surfing the net, watching a movie, it's random. This has been going on for approximately a month or so, and becoming more frequent. I am nearing the memory limit, but that shouldn't affect this, should it?

Information:
Toshiba Satellite A215-S4747
Windows Vista
Microsoft ACPI-Compliant Control METHOD Battery
ACPI x86-based PC
TOSHIBA MK2035GSS ATA Device
ATI Radeon X1200
HL-DT-ST DVDRAM GSA-T20N ATA Device
Texas Instruments PCIxx12 Integrated FlashMedia Controller
TOSHIBA Software Modem
AMD Turion(tm) 64 X2 MOBILE Technology TL-56
Microsoft iSCSI Initiator

Probably more than is needed, but that's better than not enough. If you need other information, let me know.How much free space do you have on your hard drive?

Did you make any hardware or software changes before this started?

What happens if you plug in an external MONITOR?

Do you have any virus protection?

Have you tried System Restore?

How long has it been since you did a disk cleanup and defrag?

If you go into BIOS, does the screen blink off?