Help Please Dell Gx260 Wont type system password tried resetting bios no help!


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Hi, I've got a dell GX260 It wont let me type the system password in, Which i created in bios, I've tried resetting bios but still no luck, when i try and type it just beeps repeatidly ive tried different keyboards same problem any chance on any help? Specs are as follow Pentium 4 2.4 Ghz 512MB ram, 20Gb Harddrive unsure on rest Many Thanks

P.s cant access windows as it won't let me pass due to the password does that mean my computers Obsilite?