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The HP problem which is also known as “smart test code 303” is generally occurs because of the hard-disk virus problem which shows while users are deploying their HP printers. This problem is associated with the boot-up issues, technical errors with the hard-drive, and bad sectors etc. You need to view the given below resolutions which are mentioned to fix HP Smart Test Failed Error Code 303. Resolve HP Smart Error Message 303 Steps to resolve HP Smart Error Code 303 Solution 1: Resolve Issues with Bad Sectors in Hard Drives If there are bad sectors in the hard drive, issues might arise due to this i.e. where the smart drive tools resides. So it is important to have a correct check on the hard drive to see whether there is any potential bad spots or fault is there inside the platter of the hard drive. This is necessary since the hardware is completely defective and a part of the disk platter is affected. It is also possible, that the hard drive is dead ...