Cant run 2 gigs

i have a HP Pavillion zv5000 AMD Athlon 3000+ 1.8 processor. running windows7, i just bought some ram to upgrade from 512 to 2 gigs win,7 wont boot past the "starting windows" screen but if i take out 1gig and add a 256 it boots fine with a gig and 256, so i formatted back to the original OS that came with the laptop and it works fine with 2 gigs (xp home) this laptop is capable of 2gigs running but wont on Win,7.. the ram is fine and both are matching
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More about cant gigs
  1. Are you sure that the sticks are good? Test them with memtest.
  2. ^+1

    Use memtest to test the RAM.
  3. frozenlead said:
    Are you sure that the sticks are good? Test them with memtest.

    Yes they are both good, HP rep said thay have to be a certain model number which dont make sence cause if i can run 2gigs on xp home as am now why wont windows7 get past the "starting windows splash" screen? with 2 gigs ? only can run 1 gig stick and a 256 one. :cry:
  4. The only problem I see is with that 1GB stick that the machine won't boot with. It has to be bad. I can't think of another explanation.
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