In reading the user reviews on PNY memory at TigerDirect, there are a 
number of complaints about PNY not being compatible with other memory.

Tom Mayer

John Cakars wrote:
> Dell 4000, P4, 680RAM, WD hardrive 120G 
>
> I have a Centon 512 PC2700 module in one socket. The
> other  socket has a DEll generaic 128 RAM. I removed
> the 128 module and installed a PNY 512MB PC2700
> module. When I turned the pc back on, the system would
> boot into windows.
>
> Replacing the PNY stick with the Dell stick made the
> system normal agains. Chaning  the Centen stick with
> the PNY brought again no Windows action. 
>
> I did MemTest +v1.65, but the test stopped during Test
> 7.
> WallTime 35:03 Cached 10244 Rsvd Mem 168K MemMap
> e820-Std Cache on ECC off Test Std Pass 0 Errors 933
> ECC    Erros 0
>
> Unexpected Interrupt - Halting
> Test: 3 Errors: 1
> Test: 4 Errors: 1
> Test: 5 Errors: 188
> Test: 6 Errors: 653
> Test: 7 Errors: 90
>
> I aslo ran the Windows Memory Diagnostic. The test
> stopped running on PASS 1 Test 7.
>
> When I rebooted, this message came up: CMOS/GPNV
> checksum bad. Rebooting produced a DOS screen that
> mention the name of my ATI Rage 128 video card.
>
> Then the screen changes to the listing of the CPU. The
> memory starts counting from 100 until the maxium
> amount is reached. Then a dark screen comes up with
> this message: No Boot Device Detected; System halted.
>
> If you play with the pc when it is counting RAM, a
> screen appears:PLEASE SELECT BOOTDEVICE. But there are
> no choices. It is blank page.
>
> So what's wrong with my RAM? Shall I return the PNY to
> the store?
>
> This is a library computer. So getting answers will be
> slow.
>
> Switching the modules back and forth has brought the
> pc to the following messages in boot mode.
>
>  
>
>                The NOSPIN Group Promotions is now offering
>                  our special coffee mugs and mouse pads
>               with the PCBUILD logo...  at a great price!!!
>              http://freepctech.com/goodies/promotions.shtml
>
>   

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