Dropkickmurphys

Hey guys, i have the HDD as labeled in the the header, i am having a problem when booting sometimes.

sometimes it just wont boot, it comes up with an error in DOS saying "boot device not detected" or something like that (cant remember exactly)... (ill post more details when it happens again).

i was just wondering, could this be down to HDD failure or something else?

i need to get this sorted ASAP as i am heading back to Uni at the weekend and i need to be able to use my PC.

thanks

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Main PC: Intel Q6600 2.4Ghz (OC @ 3.375GHz), Gigabyte P35C-DS3R motherboard, 4GB 8500 1066mhz RAM , 512MB Geforce 9800GTX+, 500GB Seagate 7,500RPM HDD, Lite-on 20x DVD+RW, OCZ GameXStream 850W PSU, CoolerMaster Black Centurian 534 Case, Samsung 19" SyncMaster 940BW monitor / Samsung 19" TV, Windows 7 Pro / XP Pro (Dual Boot)
Laptop (Acer Aspire 5720): Intel T7500 2.2GHz, Intel Graphics X3100, 2GB DDR2 Ram, 160GB HDD, 15.4" Acer CrystalBrite Monitor.
Xfire: poultrygeist Steam ID: unpdave