laptop problems

[haz]

Hey all would appreciate any help you may have.HP-Compaq 6720s.was going to put in 4 gigs ram.but will not boot,has eeror code shut down,cannot find anthing in bios to set to 4 gigs,nor a updated bios.it shows it uses a ms-6.0.6000 bios,intel cpu.put 2 gig stick in and a 1 gig works,but 2x2gig sticks no go.appreciate any help

[CaptainHaplo]

Are both sticks the same type and clock speed? Sounds like a clock speed mismatch.

[haz]

yep both 2 gig stcks same-matched its wierd was wondering if it could be a board that only supports 3gig???

[CaptainHaplo]

What Bios version are you using? Latest one appears to be F.0D N (4 Nov 2008).If your using something else - get it here:

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=3442832&prodNameId=3442833&swEnvOID=2096&swLang=8&mode=2&taskId=135&swItem=ob-66972-1

From what I have seen - your not the only person to run into this issue. The board specs show it will handle 4 Gigs

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01129747&lang=en&cc=us&taskId=101&prodSeriesId=3442832&prodTypeId=321957

The SoDimms must be DDR2 at 667mhz. It is possible that if the speed is off, the laptop may just run one fine (kicking it down to the lower speed) but with both sticks it chokes. Either stick alone it boots fine?

[haz]

sticks are same speed 667,matched,installed new bios,went into bios to check settings and no find any settings to change memory ie ram,still wont use 4gigs. am wondering if hp/comq has something installed that does it.am considering wiping hd and reinstalling without hp/comq junk.will let you know thanks for all your help

[CaptainHaplo]

Your welcome. Know that if it wont boot, reinstalling the OS won't fix it, as your not getting to the OS from the boot description you gave.

[Herr-Berbunch]

Further to the answers above, check your OS is 64-bit otherwise it'll only see 3.5 gigs. That said it should still run with 4 in but only use 3.5...

Good luck!