Did you reinstall the software?
What about reading the manual for troubleshooting guide or set up instructions?
Did you send an email for Shark?
guys !! i just bought a new 10.4 Desktop TFT LCD Monitor w Touch Screen + VGA make by Shark and model is SHK1040 !! the lcd work but the touch screen doesn't !!! i installed the software already but there are only beep sound come out when i touch the screen !! but the touch screen dont fuction right like it suppose to be !!