The winload.exe must be corrupt so the digital signature is invalid. Try downloading the Windows 10 ISO from here and use that to install Windows. Best is to burn on DVD-ROM to have it handy in any installation or troubleshooting you may do.

Hi, I have purchased digicert certificate and signed my drivers they work fine with wn7 and also checked the properties of driver, its shows driver is digitally signed. But when i install the drivers for windows XP, OS does not support its signature and gives message that driver is not digitaly signed. I have attached the screen shot regarding same message.

I have used signtool, Infcat commands to get drivers signed following are the statements used in command prompt. Inf2cat /driver:G: swapnil WindowsHMIDRIVER HMI_USB_DRIVER Windows7_and_8 64bit /os:2000,XP_X86,XP_X64,Server2003_X86,Server2003_X64,Vista_X86,Vista_X64,7_X86,7_X64 signtool.exe sign /v /ac 'DigiCert Assured ID Root CA.crt' /s My /n 'Electronica Mechatronic Systems (India) Pvt Ltd' /t 'G: swapnil WindowsHMIDRIVER HMI_USB_DRIVER Windows_XP bulkusb.cat' signtool.exe sign /v /ac 'DigiCert High Assurance EV Root CA.crt' /s My /n 'Electronica Mechatronic Systems (India) Pvt Ltd' /t 'G: swapnil WindowsHMIDRIVER HMI_USB_DRIVER Windows_XP EMSUSBXP00.sys' These commands gave no error or warning. It was successfully processed. Download lagu kereta malam perjalanan.

I also checked for windows 7 64 bit, but i found that drivers get installed properly but when i check driver properties it show driver is not digitally signed. Why is it so. Please let me know what would have gone wrong.

Because they're silly. One team created the software and driver for the webcam and another team is in charge of testing and verifying drivers from all the hardware manufacturers around. For some reason team B forgot to talk to the guys in the same building. It's not necessarily a problem, but just means the driver hasn't been tested thoroughly. My family's Microsoft webcam had the same message, as does plenty of drivers that I install.

As long as you got the dirver from the best, most credible site then there's nothing mroe you can do.