Ali Arslan

tnicoson First of all, thank you so much for the detailed reply and guidance. After so many days of trial and research, I had figured most of what you had mentioned out. The final conclusion is that the Keyboard has a hardware issue. Most probably, its USB port is damaged. Thank you guys for your support.

Yes. I have ASIO4ALL driver installed.

Just tested the Piano's USB port with tester. It is live (tester's bulb lit up). Is it supposed to be this way? I have managed to convert Audio from the Piano to Midi signal through Reatune plugin in Reaper. But it has a lot of latency and it is not accurate. Are there any tried and tested solutions for Audio to Midi?

You're right. Connecting 2 cables didn't work. My laptop (Dell N4050) didn't accept XP installation, so couldn't try that. By tons of drivers, I meant, Casio (incl. the one you mentioned in the link), Yamaha, Korg, and God knows which driver I have installed. None of them worked. I even force installed Casio driver as Legacy driver. It appeared in Sound and Game Controller category, but when I connected my Piano, it still appeared as an Unknown Device under Universal Bus Controllers category. I currently have Windows 7-64 bit installed. Tired of switching between windows. My USB ports are fine, I have tested them with other devices like Hard Disks, Mice etc. It has to be either the Driver, the Cable or may be Piano's USB port might be damaged.

I have recently bought a used Casio LK-41 (Japanese Language). It has a Midi Usb port. I have been trying to connect it to my Dell N4050 laptop to use it as a midi controller device with Reaper, but it is not connecting properly. I have tried 4 different midi cables of various lengths, but no luck. I have tried to connect it to another laptop as well, but I get the same error. I have tried tons of different drivers; none of them work. In the device manager, it should show under Sound and Game Controllers, but it always appears as an Unknown Device under Universal Serial Bus Controllors. I used to have Windows 10 64-bit; I switched to Windows 7 32-bit, then to Windows 7 64-bit in a hope to resolve the issue, but all in vain. I have done a lot of research. But I haven't been able to find any solution. I would really appreciate if a professional would help me out please! P.S. I am considering the following solutions at the moment: 1. Switching to Windows XP 32-Bit. 2. Joining 2 Midi Cables in order to attach the Piano to two USB ports at once (In case, if it is an issue of the piano not getting enough voltage).