Nokia mobile hardware and software updating
Press the volume up key and the power button simultaneously for about 30 seconds or until the root menu appears.
Then choose the action you want to take from the root menu, in this case “Wipe data/factory reset”.
Then, try turning your phone off completely and plugging it into the socket - bear in mind if the battery is completely drained, it might take up to 2 or 3 minutes to start charging.
Please note: a hard reset will completely erase all the data, settings and content on your smartphone, returning it to the original factory settings.
I had got reply that the problem of touch and keypad is of hardware problem but i have read in windows phone central forum or even at many others online forum that lumia 535 has really problems and microsoft has accepted that.
Downloading the Nokia Software Updater installation package takes approximately 5 minutes over broadband.Whatever type of problem is there , either software or hardware ,as a customer i wish that microsoft has to address it quickly as it is not expected from technology giant.