Wired+Wireless Keyboard

[Varunnagwekar]

Hi,
I am basically looking out for a good keyboard which is both wired and wireless. Meaning I can plug in to a usb cord when I am near the pc and make the keyboard wired and when I am away make it wireless. Price not more than 4-5k.

Also, my old iball keyboard has developed a peculiar problem. My top row keys (Q to P) work only for the first 5-10 minutes when the pc is started, but then stops working altogether. I can't understand exactly whether it is a software or hardware issue. I have tried the keyboard on other pcs also but to no avail. If you guys have any idea I would be grateful as I don't wanna spend on a new keyboard unless necessary.

Thanks.