EVO connection to PC

[adenicol]

I am about ready to throw this EVO out the window...all day I have been trying to get the SD card to be seen by my PC when I connect the USB and it won't do it. I have a PC and a laptop...if I connect to the laptop it will let me open the EVO as an external drive, if I connect to the PC after connecting it to the laptop it will let me open it as an external drive for about 2 minutes then it drops the connection to the phone and I can't get it to work again untill I plug it into my laptop.

It will charge from the PC, but the PC just won't see the damn thing. I have tried reflashing the phone and reinstalling HTC Sync on the PC but it just doesn't seem to want to work. Even tried two different USB cables. I am using OMJ's Rom. This all seems to have started when I installed ROM manager on my phone.

Anyone having similar issues or have any idea what I can do to fix this?