Setting Cisco Switch Automatic boot

why

　　HAving a problem with one of our 3500 switches.
　　When it is first switched on it comes up with....
　　C3500XL Boot Loader (C3500-HBOOT-M) Version 12.0(5.2)XU, MAINTENANCE INTERIM SOE
　　Compiled Mon 17-Jul-00 18:42 by ayounes
　　starting...
　　Base ethernet MAC Address: xx:xx:xx:xx:xx:xx
　　Xmodem file system is available.
　　Initializing Flash...
　　flashfs[0]: 16 files, 3 directories
　　flashfs[0]: 0 orphaned files, 0 orphaned directories
　　flashfs[0]: Total bytes: 3612672
　　flashfs[0]: Bytes used: 3252736
　　flashfs[0]: Bytes available: 359936
　　flashfs[0]: flashfs fsck took 4 seconds.
　　...done Initializing Flash.
　　Boot Sector Filesystem (bs:) installed, fsid: 3
　　Parameter Block Filesystem (pb:) installed, fsid: 4
　　The system is not configured to boot automatically.  The
　　following command will finish loading the operating system
　　software:
　　boot
　　switch:
　　At which point you manually have to type boot.
　　Is there any where you can configure this to automatically boot.
　　The conf reg is set to 0xf
　　Is there a quick fix or is it a return to supplier as a faulty unit.
　　Thanks in advance
　　========================================================
　　Ive had a look at the switch and found this out that might be helpful to someone.... Including Me
　　when the Switch prompt appears when it doesnt automatically boot if you type
　　set
　　it brings up the settings.
　　switch: set
　　ASSEMBLY_REVISION_NUM=A0
　　BOOT=flash:c3500XL-c3h2s-mz.120-5.WC3b.bin
　　ENABLE_BREAK=1
　　MAC_ADDR=00:06:28:3D:F8:40
　　MANUAL_BOOT=yes
　　MODEL_NUM=WS-C3524-PWR-XL-EN
　　MODEL_REVISION_NUM=G0
　　MOTHERBOARD_ASSEMBLY_NUM=73-4033-10
　　MOTHERBOARD_REVISION_NUM=A0
　　MOTHERBOARD_SERIAL_NUM=FAA05190BFT
　　POWER_SUPPLY_PART_NUM=34-0968-01
　　POWER_SUPPLY_SERIAL_NUM=DAB04260TTT
　　SYSTEM_SERIAL_NUM=FAA0519G02N
　　para=?
　　you can see that manual boot is set to yes.
　　type set MANUAL_BOOT no
　　This has now fixed the problem.