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I own an Aspire R7 (running Windows 8 64Bit). Yesterday morning my touchscreen suddenly stopped working.
After each boot I see an error in the event log saying something like "Driver\WUDFRd failed to load the driver for the device HID\VID_0483&PID_91D1&Col01\7&1b0945e0&0&0000".
In the Device Manager there is no device showing an error or something. In the category "Monitor" there's only a PnP-Monitor listed - shouldn't the TouchInput-Device be shown there? Edit: I also looked through the HID devices: the Device with the hardware ID of the event log message isn't there, too.
I already tried to reinstall the HID-Monitor drivers using Acer Recovery Manager, but after showing some information like "installing" nothing else happens. There's also no change in the Device Manager.
I also removed the "PnP-Monitor" from the Device Manager and started a "Search for new hardware", but that only lead to the "PnP-Monitor" being reinstalled.
I also did perform a factory reset, but that didn't help, as well.
I'd really appreciate help from anyone. I'm at work currently, so I wouldn't be able to test any tips until around 17 o'clock (MEST) .