My computer keeps restarting?

i have no clue why, imma try somethings right now, FYI i have Windows xp and I get this error





C:\DOCUME~1009~1.UNK \LOCALS~1Temp \WER3611.dir00\ Mini101307-03.dmp


C:\DOCUME~1\009~1.UNK\ LOCALS~1Temp\ WER3611.dir00\sysdata.xml





BCCode : 100000d1 BCP1 : 00DE2E9C BCP2 : 00000002 BCP3 : 00000000 BCP4 : F90DACDB OSVer : 5_1_2600 SP : 2_0 Product : 768_1





and





*** STOP: 0x000000D1


(0x00DE2E9C, 0x00000002, 0x00000000, 0xF90DACDB)





if anyone can help please help me

My computer keeps restarting?
your ram memory may be wasted