Invalid access to memory location

I have a 2003 SBS server that I sundenly started to get invalid access to memory location when I try and execute anything from the command prompt. For example taskkill, also when I go to look at depend dependencies of a service I will get the same error. I thought it might be a problem with WMI so I ran a WMIDIAG tool from Microsoft on it and I see a lot of invalid access to memory errors in the log for it (see below). Any one have a idea of what might be wrong?

Thanks in advance for your help

.1300 01:13:16 (0) ** Verifying WMI providers loaded BEFORE WMIDiag execution.
.1301 01:13:16 (1) !! ERROR: (CheckWMIStaticData) : 0x800703E6 - Invalid access to memory location.
.1302 01:13:16 (0) ** Verifying WMI namespace 'Root' (L=1).
.1303 01:13:16 (1) !! ERROR: (CheckWMIStaticData) : 0x800703E6 - Invalid access to memory location.
.1304 01:13:16 (0) ** Verifying WMI ADAP status.
.1305 01:13:16 (1) !! ERROR: (GetADAPStatus) : 0x800703E6 - Invalid access to memory location.
.1306 01:13:16 (0) ** Verifying WMI features.
.1307 01:13:16 (3) Opening WMI namespace 'Root'.
.1308 01:13:16 (1) !! ERROR: (CheckWMIFeatures) : 0x800703E6 - Invalid access to memory location.
.1309 01:13:16 (3) Opening WMI namespace 'Root/Default'.
.1310 01:13:16 (1) !! ERROR: (CheckWMIFeatures) : 0x800703E6 - Invalid access to memory location.
.1311 01:13:16 (3) Opening WMI namespace 'Root/CIMv2'.
.1312 01:13:16 (1) !! ERROR: (CheckWMIFeatures) : 0x800703E6 - Invalid access to memory location.
.1313 01:13:16 (3) Opening WMI namespace 'Root/WMI'.
.1314 01:13:17 (1) !! ERROR: (CheckWMIFeatures) : 0x800703E6 - Invalid access to memory location.
.1315 01:13:17 (0) ** Collecting system information.
.1316 01:13:17 (1) !! ERROR: (CheckWMIInventory) : 0x800703E6 - Invalid access to memory location.
.1317 01:13:17 (0) ** Verifying WMI providers loaded AFTER WMIDiag execution.
.1318 01:13:17 (1) !! ERROR: (CheckWMIStaticData) : 0x800703E6 - Invalid access to memory location.