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How to Solve Hard Disk Error 303 and 305

Updated on Apr 08, 2019 by Jean to Backup and Recovery

Here, hard disk 1 quick 303 and hard disk 1 full 305 solutions are provided on HP PCs and laptops. It's definitely the best fix for hard drive error 303 and 305 without losing data.

What does hard disk error 303 and 305

Hard drive disk error 303 and 305 are diagnostic error codes. Hard disk 1 quick 303, sometimes hard disk 1 full 305 are the specific error messages that indicate the hard drive failed, dead, and needs to be replacing immediately.

So, if you're seeing such errors on your PC with the exact information in the following displayed on the machine's screen, go to back up the failing hard drive immediately and opt for the best solution to upgrade hard disk with new HDD or SSD.

"Start up test failed
Hard disk smart 301
Hard disk 1 Quick 303"

How to back up data on hard disk with 303 or 305 error

Again, when a hard drive is given 303 or 305 error, its life is coming to an end, only a brand new hard drive will solve the problem. The question is, most of the time you need to use a recovery disc to boot into the computer in order to use the backup and recovery software to create a backup image of files, photos, videos and more data on the hard drive, because when a hard drive failed with 303 or 305 error had the system on it, it can hardly boot.

What if you don't have a recovery CD at hand? How can you troubleshoot the issue in an emergency? Don't be afraid, here, EaseUS Todo Backup utility can reduce your worry. Simply take out the failed hard drive and connect it to another normal computer, download EaseUS data backup software, and create a bootable rescue media.

To make a bootable disk of EaseUS Todo Backup, follow the instruction carefully.

Step 1. Prepare an empty USB or CD/DVD drive
Note: Do remember to empty or clear your USB or CD drive. If you saved data on it, move them to another safe location.

Step 2. Connect USB/CD/DVD to your Windows PC
Step 3. Run EaseUS Todo Backup and click Create Emergency Disk in Tools on the left pane.

Select to create emergency disk.

Step 4. Choose USB or CD/DVD as the disk location for creating to WinPE disk so as to boot up the computer when the Operating System fails to boot or computer dies.
Step 5. Click Proceed to start creating the WinPE disk to your USB or CD now.

Create WinPE disk to USB/CD.

After successfully booting into Windows, now you can continue with the hard drive and partition backup with EaseUS Todo Backup software.

Done with the necessary backup? Now you can shut down the computer and replace the failed hard drive with the prepared new one. To restore the backup you just created, launch EaseUS Todo Backup again, select the image file and click "Recovery". The hard disk data will come back.