HP ZBook 17 Maintenance and Service Guide - Page 157
Read-write error, Slow performance, Blue screen (BSOD) error, Common Blue Screen Error Messages
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Read-write error Items Procedures Symptoms Possible causes ● Post error message (i.e., error Loose connection, faulty hardware. code 301) Troubleshooting steps ● Hang when working on data, files, documents 1. Perform a hard reset (8. Hard reset on page 102). 2. Reset BIOS to default (9. Soft reset (Default Settings) on page 103). 3. Verify drive connection and flex cable. Reseat connection (10. Reseat cables and connections on page 103). 4. Use the HP Hardware Diagnostics tool to test. If failed, record failure code and have the hard drive replaced. 5. If no error with HP PC Hardware Diagnostics (UEFI) tool, try to repair the hard drive and its files in Windows (using command "CHKDSK /f /r /x"). Use HP Restore to reinstall the operating system, if needed. 6. Test with a verified working hard drive. If it is not recognized, the system board is faulty. Note If there is a hard drive POST error message, see POST Error Messages and User Actions on page 152. Slow performance Items Symptoms Slow performance even when performing small read/write operations Tips & tricks Procedures Possible causes Operating system files, hard drive is full. Troubleshooting steps 1. Transfer data from the hard drive to create more space. Microsoft recommends at least 200 MB to sync system files. 2. Perform disk defragmentation to consolidate fragmented data on the hard drive so it will work more efficiently. NOTE: Do not defrag an SSD. For optimal system performance, you need to place your operating system and all of your most commonly used applications and files in the fastest hard drive (solid-state drive) and fastest areas on the drive (primary partition of 200 GB max). See Routine Maintenance for Performance Improvement on page 154). Blue screen (BSOD) error Faulty hard drive may cause blue screen error. Perform the drive tests using the HP Diagnostics Tool to make sure the drive is functional. If all of the tests pass, see Common Blue Screen Error Messages on page 154 for detailed troubleshooting steps. Common issues and possible solutions 143