Running IBM Netfinity 3000 server ; Windows 2000NT for my business. Server runs 24 hours a day and maintains data for two software programs. Lately it has displayed an 'error message' indicating that memory is low and unless it is re-booted, the machine is useless. I have upgraded it from 128 to 256K ram but continue to get the low memory message, and the PC continues not to function. I have determined that the ram modules are installed correctly and it is showing 256k upon testing. I have run virus checks...PC is 'clean'; also have run tests on www. pcpitstop, which indicates that machine is ok. Can anyone offer suggestions; I would hate to have to purchase a new machine at this stage.

hello
low disk space can cause this.
viruses can cause this.
do online scan at housecall anti virus.
spyware can allso cause this.
d/l spybot search and destroy,update it run it.
d/l ad-ware do the same.
some may have hacked your system check log files for suspiuse entries.
check hard drive for missing space. hackers could implament hidden sectors.
do chkdisk defrag
d/l docmemory test the ram.
last think you want is a company server slaved as a wares or spam server.

Thanks!! I'm sure there's no virus..I've run the TrendMicro virus detector and it shows that the PC is clean. I will run chkdsk, etc. and see if that makes a difference.