Thanks for the reply.
After more research based on your link I found the below solution worked for me. It seems there were some Windows security files unregistered (thanks Microsoft... NOT!):
http://leobarryw.blogspot.com/2012/06/possible-solutions-for-invalid-digital.html" To fix this, register the Softpub.dll, Wintrust.dll, Initpki.dll, and Mssip32.dll files. To register these files, follow these steps:
1. Click Start, click Run, type cmd, and then click OK.
2. At the command prompt, type regsvr32 Softpub.dll /s, and then press ENTER.
3. At the command prompt, type regsvr32 Wintrust.dll /s, and then press ENTER.
4. At the command prompt, type regsvr32 Initpki.dll /s, and then press ENTER.
5. At the command prompt, type regsvr32 Mssip32.dll /s, and then press ENTER."
After registering those 4 files, the registry value below changed to 146432, just as the author said (mine was 146123 or something befor the files were registered manually)
"[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing]
The key called "State." And its default value should be "0x00023c00 (146432).""
XP says my device is installed, and only the red LED is on now
Need to check it out....
UPDATE:
Success! It read a verified 27C512 EPROM I have. I read the EPROM, saved the image as a .bin file to the desktop, then compared it to another .bin file I had in another folder.
I use "HASHTAB", it is simple and powerful.
http://implbits.com/products/hashtab/I assume it will also write to the EPROM as well, as long as my laptop is functioning well
. The MiniPro worked flawlessly on the Windows 7 PC.
Thanks again! I hope this helps others as well.